diff options
| -rw-r--r-- | sim/pru/ChangeLog | 6 | ||||
| -rw-r--r-- | sim/pru/pru.h | 2 | ||||
| -rw-r--r-- | sim/pru/pru.isa | 15 | ||||
| -rw-r--r-- | sim/testsuite/sim/pru/ChangeLog | 4 | ||||
| -rw-r--r-- | sim/testsuite/sim/pru/lmbd.s | 61 |
5 files changed, 88 insertions, 0 deletions
diff --git a/sim/pru/ChangeLog b/sim/pru/ChangeLog index bccc3ef..ad9aff9 100644 --- a/sim/pru/ChangeLog +++ b/sim/pru/ChangeLog @@ -1,3 +1,9 @@ +2020-11-12 Dimitar Dimitrov <dimitar@dinux.eu> + + * pru.h (RS1SEL): New macro. + (RS1_WIDTH): New macro. + * pru.isa: Describe the LMBD instruction. + 2019-09-23 Dimitar Dimitrov <dimitar@dinux.eu> * Makefile.in: New file. diff --git a/sim/pru/pru.h b/sim/pru/pru.h index 240fc30..cbcc3ef 100644 --- a/sim/pru/pru.h +++ b/sim/pru/pru.h @@ -58,6 +58,8 @@ #define XBBO_BASEREG (CPU.regs[GET_INSN_FIELD (RS1, inst)]) +#define RS1SEL GET_INSN_FIELD (RS1SEL, inst) +#define RS1_WIDTH regsel_width (RS1SEL) #define RDSEL GET_INSN_FIELD (RDSEL, inst) #define RD_WIDTH regsel_width (RDSEL) #define RD_REGN GET_INSN_FIELD (RD, inst) diff --git a/sim/pru/pru.isa b/sim/pru/pru.isa index 0501545..c7860d0 100644 --- a/sim/pru/pru.isa +++ b/sim/pru/pru.isa @@ -247,3 +247,18 @@ INSTRUCTION (iloop, LOOP_IN_PROGRESS = 1; PC++; }) + +INSTRUCTION (lmbd, + { + int lmbd_i; + + OP2 = (IO ? IMM8 : RS2); + + for (lmbd_i = RS1_WIDTH - 1; lmbd_i >= 0; lmbd_i--) + { + if (!(((RS1 >> lmbd_i) ^ OP2) & 1)) + break; + } + RD = (lmbd_i < 0) ? 32 : lmbd_i; + PC++; + }) diff --git a/sim/testsuite/sim/pru/ChangeLog b/sim/testsuite/sim/pru/ChangeLog index d8b438b..3d862d1 100644 --- a/sim/testsuite/sim/pru/ChangeLog +++ b/sim/testsuite/sim/pru/ChangeLog @@ -1,3 +1,7 @@ +2020-11-12 Dimitar Dimitrov <dimitar@dinux.eu> + + * lmbd.s: New test. + 2019-09-23 Dimitar Dimitrov <dimitar@dinux.eu> * add.s: New test. diff --git a/sim/testsuite/sim/pru/lmbd.s b/sim/testsuite/sim/pru/lmbd.s new file mode 100644 index 0000000..9a9e782 --- /dev/null +++ b/sim/testsuite/sim/pru/lmbd.s @@ -0,0 +1,61 @@ +# Check that lmbd insn works. +# mach: pru + +# Copyright (C) 2020 Free Software Foundation, Inc. +# Contributed by Dimitar Dimitrov <dimitar@dinux.eu> +# +# This file is part of the GNU simulators. +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. + +.include "testutils.inc" + + start + + ldi32 r14, 0xffffffff + ldi32 r15, 0x0 + ldi32 r16, 0x40000000 + ldi32 r17, 8 + + lmbd r0, r14, 0 + qbne 2f, r0, 32 + + lmbd r0, r14, 1 + qbne 2f, r0, 31 + + lmbd r0, r15, 1 + qbne 2f, r0, 32 + + lmbd r0, r15, 0 + qbne 2f, r0, 31 + + lmbd r0, r16, r15 + qbne 2f, r0, 31 + + lmbd r0, r16, 1 + qbne 2f, r0, 30 + + lmbd r0, r14.w1, 1 + qbne 2f, r0, 15 + + lmbd r0, r17.b0, 1 + qbne 2f, r0, 3 + + lmbd r0, r17.b0, r15 + qbne 2f, r0, 7 + + +1: + pass +2: fail |